Sweet Potato, Hazelnut, Feta and Thyme Tarte Tatin – Sophie Zalokar

Ingredients

• 100 g spelt or wholemeal plain flour
• 150 g plain flour
• 200 g + 50 g unsalted butter, diced
• ½ tsp salt
• ½ cup sour cream
• 1 tbsp fresh thyme, leaves stripped from sprigs
• 1.2 kg med sweet potatoes, peeled
• ½ cup toasted hazelnuts, roughly chopped
• salt flakes & freshly cracked black pepper
• 1 tbsp Balsamic vinegar
• 100 g feta
• thyme sprigs, to garnish